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aothmsaothms
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- Correctly format REALs according to ISO 10303-21 instead of C++ std::stream double formatting
- Add the IfcHierarchyHelper to assist in the creation of IFC files - Add the IfcOpenHouse example for writing topological geometry and tessellated Open Cascade shapes to IFC
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14 files changed

+1359
-96
lines changed

14 files changed

+1359
-96
lines changed

‎cmake/CMakeLists.txt‎

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@@ -102,6 +102,8 @@ ADD_LIBRARY(IfcParse STATIC
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../src/ifcparse/IfcWrite.cpp
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../src/ifcparse/IfcGuidHelper.cpp
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../src/ifcparse/IfcHierarchyHelper.cpp
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)
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ADD_LIBRARY(IfcGeom STATIC
@@ -159,6 +161,7 @@ SET(include_files_parse
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../src/ifcparse/IfcCharacterDecoder.h
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../src/ifcparse/IfcException.h
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../src/ifcparse/IfcFile.h
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../src/ifcparse/IfcHierarchyHelper.h
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../src/ifcparse/IfcParse.h
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../src/ifcparse/IfcUtil.h
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../src/ifcparse/SharedPointer.h

‎src/examples/CMakeLists.txt‎

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@@ -1,2 +1,5 @@
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ADD_EXECUTABLE(IfcParseExamples IfcParseExamples.cpp)
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TARGET_LINK_LIBRARIES (IfcParseExamples IfcParse)
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TARGET_LINK_LIBRARIES (IfcParseExamples IfcParse)
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ADD_EXECUTABLE(IfcOpenHouse IfcOpenHouse.cpp)
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TARGET_LINK_LIBRARIES (IfcOpenHouse IfcParse IfcGeom TKernel TKMath TKBRep TKGeomBase TKGeomAlgo TKG3d TKG2d TKShHealing TKTopAlgo TKMesh TKPrim TKBool TKBO TKFillet)

‎src/examples/IfcOpenHouse.cpp‎

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‎src/ifcgeom/IfcGeom.h‎

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@@ -96,6 +96,7 @@ namespace IfcGeom {
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double face_area(const TopoDS_Face& f);
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void SetValue(GeomValue var, double value);
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double GetValue(GeomValue var);
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Ifc2x3::IfcProductDefinitionShape* tesselate(TopoDS_Shape& shape, double deflection, IfcEntities es);
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namespace Cache {
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void Purge();

‎src/ifcgeom/IfcGeomFunctions.cpp‎

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@@ -86,6 +86,12 @@
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#include <BRepGProp_Face.hxx>
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#include <BRepMesh.hxx>
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#include <BRepTools.hxx>
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#include <Poly_Triangulation.hxx>
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#include <Poly_Array1OfTriangle.hxx>
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#include "../ifcgeom/IfcGeom.h"
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bool IfcGeom::create_solid_from_compound(const TopoDS_Shape& compound, TopoDS_Shape& shape) {
@@ -489,4 +495,68 @@ double IfcGeom::GetValue(GeomValue var) {
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}
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assert(!"never reach here");
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return 0;
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}
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Ifc2x3::IfcProductDefinitionShape* IfcGeom::tesselate(TopoDS_Shape& shape, double deflection, IfcEntities es) {
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BRepMesh::Mesh(shape, deflection);
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Ifc2x3::IfcFace::list faces (new IfcTemplatedEntityList<Ifc2x3::IfcFace>());
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for (TopExp_Explorer exp(shape, TopAbs_FACE); exp.More(); exp.Next()) {
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const TopoDS_Face& face = TopoDS::Face(exp.Current());
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TopLoc_Location loc;
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Handle(Poly_Triangulation) tri = BRep_Tool::Triangulation(face, loc);
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if (! tri.IsNull()) {
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const TColgp_Array1OfPnt& nodes = tri->Nodes();
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std::vector<Ifc2x3::IfcCartesianPoint*> vertices;
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for (int i = 1; i <= nodes.Length(); ++i) {
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const gp_Pnt& pnt = nodes(i);
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std::vector<double> xyz; xyz.push_back(pnt.X()); xyz.push_back(pnt.Y()); xyz.push_back(pnt.Z());
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Ifc2x3::IfcCartesianPoint* cpnt = new Ifc2x3::IfcCartesianPoint(xyz);
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vertices.push_back(cpnt);
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es->push(cpnt);
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}
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const Poly_Array1OfTriangle& triangles = tri->Triangles();
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for (int i = 1; i <= triangles.Length(); ++ i) {
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int n1, n2, n3;
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triangles(i).Get(n1, n2, n3);
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Ifc2x3::IfcCartesianPoint::list points (new IfcTemplatedEntityList<Ifc2x3::IfcCartesianPoint>());
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points->push(vertices[n1-1]);
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points->push(vertices[n2-1]);
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points->push(vertices[n3-1]);
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Ifc2x3::IfcPolyLoop* loop = new Ifc2x3::IfcPolyLoop(points);
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Ifc2x3::IfcFaceOuterBound* bound = new Ifc2x3::IfcFaceOuterBound(loop, face.Orientation() != TopAbs_REVERSED);
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Ifc2x3::IfcFaceBound::list bounds (new IfcTemplatedEntityList<Ifc2x3::IfcFaceBound>());
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bounds->push(bound);
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Ifc2x3::IfcFace* face = new Ifc2x3::IfcFace(bounds);
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es->push(loop);
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es->push(bound);
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es->push(face);
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faces->push(face);
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}
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}
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}
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Ifc2x3::IfcOpenShell* shell = new Ifc2x3::IfcOpenShell(faces);
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Ifc2x3::IfcConnectedFaceSet::list shells (new IfcTemplatedEntityList<Ifc2x3::IfcConnectedFaceSet>());
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shells->push(shell);
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Ifc2x3::IfcFaceBasedSurfaceModel* surface_model = new Ifc2x3::IfcFaceBasedSurfaceModel(shells);
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Ifc2x3::IfcRepresentation::list reps (new IfcTemplatedEntityList<Ifc2x3::IfcRepresentation>());
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Ifc2x3::IfcRepresentationItem::list items (new IfcTemplatedEntityList<Ifc2x3::IfcRepresentationItem>());
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items->push(surface_model);
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Ifc2x3::IfcShapeRepresentation* rep = new Ifc2x3::IfcShapeRepresentation(
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0, std::string("Facetation"), std::string("SurfaceModel"), items);
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reps->push(rep);
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Ifc2x3::IfcProductDefinitionShape* shapedef = new Ifc2x3::IfcProductDefinitionShape(0, 0, reps);
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es->push(shell);
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es->push(surface_model);
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es->push(rep);
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es->push(shapedef);
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return shapedef;
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}

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